Number | Name | Date | Kind |
---|---|---|---|
3270994 | Machan et al. | Sep 1966 | |
4043528 | Bendit et al. | Aug 1977 | |
4618058 | Gregg et al. | Oct 1986 | |
4640414 | Mobley et al. | Feb 1987 | |
4769878 | Liao | Sep 1988 | |
4798289 | Mobley | Jan 1989 | |
4907774 | Shaw et al. | Mar 1990 |
Entry |
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Quick Release Ladder Clamp (Research Disclosure), Sep. 1980, pp. 365 and 366. |